Fastener.



E. P. HARTSHORN.

FASTENER. APPLICATION FILED JAN. 27, 1908. 979,853, Patented Dec. 27, 1910.

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EDMUITB 1 HABTSHORN, OF EAST NEWARK, NEWV JERSEY, ASSIGNOR TO STEWART HAET$HORN COMPANY, OF EAST NEWARK, KEV] J EESEY, A CORPDEATIQN OF NEW JEfriiElEY.

FASTENER.

Specification of Letters Eatent. Patented Dec. 27, 1.910.

Application filed January 27, 1908. Serial No. 412,800.

To all whom it may concern:

Be it known that I, EDMUND It l-iAR'rsnorm, a citizen of the United States, and a resident of the borough of East Newark,

tion, such base or foundation being of such a character that the front only is accessible and the back is inaccessible.

The invention is particularly adaptable to the-attachment of shade roller brackets to" metallic window frames, such metallic window frames being ordinarily made of too thin material to permit a tapped opening to be formed, and so made that the back of the frame is inaccessible.

Further objects are to produce a device which may be used upon bases of varying thicknesses, which, when in place, will be substantially flush with the supported object or base of the supported object, which will be cheap and simple to manufacture, and which may be applied with the use of a few tools.

Other objects will be apparent from an examination of the following specification and accompanying drawings, considered to gether or separately.

I attain these objects by the devices illustratedin the accompanying drawings.

Figure 1 is a side view partly in section of a shade roller bracket, and a support embodying my invention. Fig. 2 is a plan view of the bracket shown in Fig. 1, the screws being a section. Fig. 3 is a view showing a modification of my invention. Fig. at is a similar View showing another modification. Fig. 5' is a similar view showing another modification. Fig. 6 is a perspective view of a nut embodying my invention. Fig. 7 is a perspective view of a sleeve embodying my invention. Fig. 8 is a detail view of a sleeve embodying my. invention, such sleeve showing a modified embodiment of my invention. Figs. 9 and 10 are detail vie of still another modification.

in all of the views like parts are designated by the same reference characters.

In carrying out my invention, I provide a screw 1 l'iaving an enlarged head 2, such I improved fastener.

head being provided with a kerf for the application of a screw driver. A sleeve 3, shown in Fig. 7, has a head which surrounds the screw and enters an opening at in the base of the shade roller bracket 5 or other device which is to be supported. The sleeve also passes through an opening (3 in the plate 7, which plate may be a portion of the wall, Window frame or any other supporting me die. to which a device is to be secured by my The thickness of the plate 7 is less. than the length of the sleeve. The sleeve is provided with a plurality of longitudinal cuts or slots 8-, which slots taper from one end of the sleeve toward the other. These slots produce a plurality of tapering fingers or legs 9, such fingers or legs ending in points 10. The inside surface of the end of each of the legs adj accnt to the point is inclined at 11, such. inclination extending from the inner wall to the outer wall of the sleeve. The other end of the sleeve is provided with 2. lug or lugs 12, which are adapted to enter a slot or slots 13, formed in the openings 4:, such lugs and slots being for the purpose of preventing the sleeve rotating, and also for the purpose of preventing the sleeve entirely passing through the opening 6. The sleeve 3 is tubular in shape and is of the size to permit the screw 1 to turn freely within it. It is made of some material sutliciently ductile to permit the fingers or legs 9 to be bent without breaking.

In connection with the screw and sleeve is employed a nut 14:. This nut is provided with a perforated body portion internally screw-threaded and adapted to surround and engage with the threads of the screw. It is also provided with one or more fingers or projections 15, which fingers or rojections are preferably pointed. Preferably there are as many fingers on the nut as there are fingers or legs upon the sleeve, the tingers on the nut being adapted to enter the spaces between the fingers or legs of the sleeve. The spaces between the fingers 15 are sufficiently wide to accommodate the points 10 of the sleeve fingers whenthe latter are caused to engage between the fingers 15. The wall of the body of the nut at the I: l 3 base or the fingers is inclined at lb, such external diameter of the nut is greater than 'the internal diameter of the sleeve.

The nut and sleeve are no larger than the openings 4 and 6, hence it ispossible to introduce the screw with the sleeve and nut in place, as shown in the upper part of Fig. l, first through the opening 1 and then leg 12 entering theslot 13 and preventing the sleeve :lirom moving any farther into the opening. The screw 1 is now rotated by means of a screwdriver. The sleeve 3 is prevented from rotating by the engagement of the lug 12 with theslotl i. The nut let will be given a partial rotation until its fingers 15 engage with the lingers or legs 3) of the sleeve. The nut is now graduall v forced toward the base of the sleeve, causing the points 10 and inclinations 11 to engage with. theinclinations 16 at the bases of the fingers 15. Further rotation of the screw will force the nut up in between the lingers or legs 9, and as the nut is larger than the bore of the sleeve, it will separate the legs and bend them outward, thus distorting the sleeve. The nut is screwed. in until it can be screwed no l'arther, and will then bear against the turned out legs 9. The parts will now assume the position shown-in the bottom of Fig. l, the legs or lingers 9 being separated and bent outward, torminga species of hollow rivet in which the legs constitute the expanded portion and rigidly hold the sleeve in posit-ion within the plate 7 against the back or in contact with the opening-.6.

The device .may be modified in many ways. in place of the form of sleeve illus trated in Fig. 1, a tube 17 of lead or other relatively soft material, made without the lingers or slots, may be used. This may be introduced in the position shown inthe bottom of Fig. 3. When the nut, which may be the same as that described, is screwed into contact with this tube, it will compress it longitudinally, distorting it, and making it assume the shape substantially as shown in the upper part of Fig. 3, the expansion of the tube taking the place of the bending apart of the fingers or legs 9.

In place of the nut, shown in Figs. 1 and 3, a nut formed of a coil of wire lS, such as shown in Fig. 4:, may be employed. This coil of wire will surround the screw 1 and engage with its threads; the engagement of the wire with the inside of the fingers orlegs 9 will prevent rotation of the coil, but by the action of the screw will separate the as shown at the bottom 0t Fig. at.

Fig. 1 shows the applicability of my in vention to a plate 7 of considerable thickness.

Figs. 3, 4 and 5 show the application of the invention to a plate which is much thinner.

In Fig. device illustrated in Fig. l to a thlnlate in which the openings (3 have been ma e by punching. The bur 19, formed by the 5 is shown the applicability of the punch, in no way prevents the effective hold ing action caused by the separation of the fingers or legs 9..

Fig. the lugs 12 are formed integral with one edge of the sleeve. i

Fig. 8 shows a modification in which but one lag is used. such lug being struck out from the material of which the sleeve is .madc.

7 shows one form-of sleeve in which The parts of the split nut are adapted to be.

assenil'ilod around the screw 20, and with the projections 22 lying within the fingers or legs 9. When the screwQO is rotated, the

nut is drawn in the direction toward the 'v head of the screw and is caused to separate owing to the shape of the screw. In this form of device the inclinations 11 and 16 need not be used.

An important feature of my invention isthat; the device does not project beyond the object: fastened to any material extent. The head of the screw is the only part thatproject's; all the other portions of the device lying within or beyond the plate. This is an important advantage in connection with shade brackets, as it permits the utilization of brackets of substantially the same shape f and size as are now on the market. Any projection beyond the base of the bracket would seriously interfere with the operation of the shade roller, which prO ectwnsare not present in devices made in accordance with my invention.

It is to be noted that in the structure em ploying the sleeve with legs, the nnslottead portion of the sleeve, measured from the, base of the legs to the base of the lugs12,

is not'greater than the thickness of the thin w nest plate to which the device is to be secured.

tion of the legs by the engagement with them ofthe nut. A

My devicemay be applied by unskilled labor and without danger of its being improperly applied. The fastener will secure 'a. window shade bracket to a. metallic window frame without any possibility of the bracket becoming loose and without any This will always insure the proper separaizs danger of the workman putting it on improperly. It is only essential that the holes in the window frame be properly located. It is to be understood that the screw may be removed whenever it is necessary to remove the bracket or other device which is secured to the plate. The screw may be returned in position or the entire fastener may be removed by destroying it or by introducing an instrument through the sleeve to bend back the sleeve legs to their first position.

In accordance with the provisions of the patent statutes, I have described the principle of my invention, together with the apparatus which I now consider to represent the best embodiment thereof, but I desire to have it understood that the apparatus shown is merely illustrative and that the invention can be carried out in other ways.

Having now described my invention, what I claim as new and desire to secure byLettors Patent, is

screw freely passes and a lug'on said head I adapted to en age the notch in the hole in body portion at right angles thereto and between the fingers on said sleeve, whereby when said screw is rotated and said nut is drawn toward said sleeve, the fingers of said sleeve are forced outwardly over the body of said nut.

2. A fastener which comprises a screw, a sleeve and a nut, said sleeve surrounding the screw, and having a lug to prevent rotation, and having tapering "fingers with. tapering slots between the fingers and inclined ends, said nut having tapering projections, the

wall of the body of the nut at the base of the projections being inclined and adapted to engage with the inclined ends of the fingers.

This specification signed and witnessed this 24th day of January, 1908.

EDMUND F. HARTSHORN.

Witnesses:

- E. LJDURGIN,

A. C. ADAMS. t 

